{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{llcccc}
\hline\hline
\multirow{2}{*}{Asset type} & Estimate & Std. Err. & Obs. & $R^{2}$ & Sample \\
                    \cline{2-6}
                    & (1) & (2) & (3) & (4) & (5) \\                    
\hline
    \\
\multicolumn{6}{l}{\textbf{Panel A: Corporate and Private Debt}} \\
LQD&       -3.93***&      (0.15)   &         830   &        0.59   &   2002-2017   \\
HYG&       -0.34   &      (0.30)   &         678   &        0.01   &   2007-2017   \\
MBB&       -1.42***&      (0.18)   &         662   &        0.34   &   2007-2017   \\
VMBS&       -1.46***&      (0.33)   &         371   &        0.13   &   2009-2017   \\
Corp. Aaa\( ^\dag\)&        0.94***&      (0.10)   &        1040   &        0.14   &   1995-2017   \\
Corp. Baa\( ^\dag\)&        0.96***&      (0.10)   &        1040   &        0.15   &   1995-2017   \\
Corp. C\( ^\dag\)&        0.23   &      (0.39)   &         973   &        0.00   &   1997-2017   \\
\hline\hline
    \end{tabular}
    }
    